# -*- coding: utf-8 -*- # # =================================================================== # The contents of this file are dedicated to the public domain. To # the extent that dedication to the public domain is not available, # everyone is granted a worldwide, perpetual, royalty-free, # non-exclusive license to exercise all rights associated with the # contents of this file for any purpose whatsoever. # No rights are reserved. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. # =================================================================== """MD4 cryptographic hash algorithm. MD4 is specified in RFC1320_ and produces the 128 bit digest of a message. >>> from Crypto.Hash import MD4 >>> >>> h = MD4.new() >>> h.update(b'Hello') >>> print h.hexdigest() MD4 stand for Message Digest version 4, and it was invented by Rivest in 1990. This algorithm is insecure. Do not use it for new designs. .. _RFC1320: http://tools.ietf.org/html/rfc1320 """ _revision__ = "$Id$" __all__ = ['new', 'digest_size', 'MD4Hash' ] from Crypto.Util.py3compat import * from Crypto.Hash.hashalgo import HashAlgo import Crypto.Hash._MD4 as _MD4 hashFactory = _MD4 class MD4Hash(HashAlgo): """Class that implements an MD4 hash :undocumented: block_size """ #: ASN.1 Object identifier (OID):: #: #: id-md2 OBJECT IDENTIFIER ::= { #: iso(1) member-body(2) us(840) rsadsi(113549) #: digestAlgorithm(2) 4 #: } #: #: This value uniquely identifies the MD4 algorithm. oid = b('\x06\x08\x2a\x86\x48\x86\xf7\x0d\x02\x04') digest_size = 16 block_size = 64 def __init__(self, data=None): HashAlgo.__init__(self, hashFactory, data) def new(self, data=None): return MD4Hash(data) def new(data=None): """Return a fresh instance of the hash object. :Parameters: data : byte string The very first chunk of the message to hash. It is equivalent to an early call to `MD4Hash.update()`. Optional. :Return: A `MD4Hash` object """ return MD4Hash().new(data) #: The size of the resulting hash in bytes. digest_size = MD4Hash.digest_size #: The internal block size of the hash algorithm in bytes. block_size = MD4Hash.block_size